I am 4 month pregnant and this period is very difficult for me because here http://motherhow.com/4-months-pregnant/ The 4th month of pregnancy is dangerous for women with the adrenal cortex dysfunction. The danger increases if a boy is expected. It happens because of testosterone.
How you can say 4 month pregnancy is dangerous for women. Just check this page http://www.pregnancyweeks.org/4-months-pregnant/ where it says pregnancy is not a dangerous thing for anyone but if you are not care about yourself then you face problem even you are not pregnant.